Android使用bindService作为中间人对象开启服务

Android使用bindService作为中间人对象开启服务

项目结构如下:



MyService:

package com.demo.secondservice;

import android.app.Service;

import android.content.Intent;

import android.os.Binder;

import android.os.IBinder;

import android.widget.Toast;

public class MyService extends Service {

    public MyService() {

    }

    @Override

    public IBinder onBind(Intent intent) {

        return new MyBind();

    }

    public void banZheng(int money) {

        if(money>1000){

            Toast.makeText(getApplicationContext(), "帮你办", Toast.LENGTH_LONG).show();

        }else {

            Toast.makeText(getApplicationContext(), "钱少,不办", Toast.LENGTH_LONG).show();

        }

    }

    //定义中间人

    public class  MyBind extends Binder{

        public  void  callBanZheng(int money){

            //调用办证的方法

            banZheng(money);

        }

    }

}

MainActivity:

package com.demo.secondservice;

import android.content.ComponentName;

import android.content.Intent;

import android.content.ServiceConnection;

import android.os.IBinder;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

public class MainActivity extends AppCompatActivity {

    MyConn myConn;

    MyService.MyBind myBind;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        Intent intent = new Intent(MainActivity.this, MyService.class);

//        startService(intent);

        //连接服务

         myConn = new MyConn();

        bindService(intent,myConn,BIND_AUTO_CREATE);

    }

    public void click(View view) {

        //自己new对象 脱离了谷歌框架

//        MyService myService = new MyService();

        myBind.callBanZheng(10200);

    }

    //监视服务的状态

    private  class MyConn implements ServiceConnection{

        //当服务连接成功调用

        @Override

        public void onServiceConnected(ComponentName name, IBinder service) {

          myBind = (MyService.MyBind) service;

        }

        //失去连接

        @Override

        public void onServiceDisconnected(ComponentName name) {

        }

    }

    @Override

    protected void onDestroy() {

        //解绑服务

        unbindService(myConn);

        super.onDestroy();

    }

}

activity_main.xml:

<?xml version="1.0" encoding="utf-8"?>

<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:app="http://schemas.android.com/apk/res-auto"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    tools:context=".MainActivity">

    <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="Hello World!"

        app:layout_constraintBottom_toBottomOf="parent"

        app:layout_constraintLeft_toLeftOf="parent"

        app:layout_constraintRight_toRightOf="parent"

        app:layout_constraintTop_toTopOf="parent" />

    <Button

        android:onClick="click"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="开启服务"

        />

</android.support.constraint.ConstraintLayout>